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  1. #1
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    New Wheelset - my Vs don't work properly

    With my stock Giant Rincon, I was very happy with the braking performance. I pull lever, I stop. Easy .

    However I recently put some Bontrager Racelite wheels on the bike, and now my brakes aren't working anywhere near as well as they used to. The lever feels almost spongey when the pads hit the rims, and I don't stop as fast.

    What would be causing this? It seems the wheels have an optional ceramic coating, could it be something to do with that? I bought them second hand and have no idea if they've got the coating or not. Is there a way to tell?

    Thanks for your help.

    Edit: Whoops, new wheelset not new hubs.
    Last edited by Some Guy; 04-04-2005 at 07:17 PM.

  2. #2
    Ty
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    spongy usually means that your cables are worn and need replacing.

    A cermaic coated braking surface is usually dark grey and matte, as opposed to shiney and silver on a standard machined side wall.

    I doubt the loss in performance in your brakes have anything to do with your new wheels, unless the rims are slightly narrower than your previous and you are having to pull a little more cable to make contact ?

  3. #3
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    The rims are significantly narrower, however I adjusted the brakes so I don't have to pull to far for them to make contact.

    I don't think it's the cables, because even if I pull on the levers really hard the bike still won't stop as fast.

    The rim walls themselves are actualy quite different to my old ones, rather than a smooth surface with a groove in the middle, it's about 10 or 15 small ridges. It is silver/grey though, not black.

  4. #4
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    A picture of the rim, if it helps:

    http://web.aanet.com.au/guy/rim.jpg

    The worn away part is where the pads grip the rim. I'm guessing it was all like the top section when new?

  5. #5
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    Most likely a bit greasy

    Just brush the rims and pads down with soapy water, then go riding... it will take a bit of time to come back. Or you could ride in the mud...

  6. #6
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    Your rims are not ceramic. Use a scotchbrite pad or steel wool with soap then rinse really well. Also,make sure your V brake pads are really clean or, better yet replace them.
    Quote Originally Posted by heatstroke
    Just brush the rims and pads down with soapy water, then go riding... it will take a bit of time to come back. Or you could ride in the mud...

  7. #7
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    Yeah, I'd go talk to that guy who claimed those were ceramic rims...maybe a machined braking surface, but not ceramic coated. A good way to get a good surface on a brake pad is to take a rough file and scrub the glaze off...
    "...the people get the government they deserve..."
    suum quique

  8. #8
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    No-one said they were ceramic.

    I'll go wash the rims and pads and tell you how it goes .

    Thanks for the advice.

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